Foley, Ryan J.;Filippenko, Alexei V.;Aguilera, C.;Becker, A. C.;Blondin, S.;Challis, P.;Clocchiatti, A.;Covarrubias, R.;Davis, Tamara M.;Garnavich, Peter M.;Jha, S.;Kirshner, Robert P.;Krisciunas, Kevin;Leibundgut, B.;Li, Weidong;Matheson, T.;Miceli, A.;Miknaitis, G.;Pignata, Giuliano;Rest, A.;Riess, A. G.;Schmidt, B. P.;Smith, R. C.;Sollerman, J.;Spyromilio, J.;Stubbs, C. W.;Tonry, J. L.;Suntzeff, N. B.;Wood-Vasey, W. M.;Zenteno, A.
(2008-09-01)
We present a large-scale effort of creating composite spectra of high-redshift SNe Ia and comparing them to low-redshift counterparts in an attempt to understand possible cosmic evolution of SNe Ia, which has m....